Gdańskie Wydawnictwo Oświatowe Publishing House (GWO) – one of the first privately owned educational publishing houses in Poland prints textbooks for mathematics, Polish language, history, physics, biology and art.
Gdańskie Wydawnictwo Oświatowe was founded in 1991. First GWO books dealing with mathematics. The series of so-called Zeszyty Gdanskie (Gdansk Workbooks) and Calendars. 
Mathematics, Mathematics, Mathematics, Mathematics, Mathematics, Mathematics Plus for junior high), biology (Biology with Tangram for high school), art (Freshly Painted for primary school) and a number of teaching support books.
Gdańskie Wydawnictwo Oświatowe has also launched a series of interactive online maps (Matematura.pl, Matlandia, Gimplus), interactive historical maps (History of Poland and Roman Empire), and Test Composer. Moreover, GWO offers selected textbooks, tests, teacher support materials and magazines as e-books.
- Jump up^ Company’s historyhttp://www.gwo.pl/?m=336